<article id="wikiArticle">
<div><div class="blockIndicator obsolete obsoleteHeader"><p><strong><span class="icon-only-inline" title="This is an obsolete API and is no longer guaranteed to work."><i class="icon-trash"> </i></span> 已废弃 Gecko 37 (Firefox 37 / Thunderbird 37 / SeaMonkey 2.34)</strong><br/>This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.</p></div></div>
<div><div class="blockIndicator nonStandard nonStandardHeader">
<p><strong><span class="icon-only-inline" title="This API has not been standardized."><i class="icon-warning-sign"> </i></span> 非标准</strong><br/>
      该特性是非标准的，请尽量不要在生产环境中使用它！</p>
</div></div>
<h2 id="Summary" name="Summary">概述</h2>
<p>将字符串中包含的特殊字符进行转义(反斜杠),然后在字符串两边各加上一个双引号(<code>"</code>)并返回,并不修改原字符串.</p>
<h2 id="Syntax" name="Syntax">语法</h2>
<pre><code class="language-javascript"><code><em>str</em>.quote()</code></code></pre>
<h2 id="Examples" name="Examples">示例</h2>
<table class="fullwidth-table">
<thead>
<tr>
<th class="header" scope="col"><code>str</code></th>
<th class="header" scope="col"><code>str.quote()</code></th>
<th class="header" scope="col"><code><a class="new" href="/zh-CN/docs/JavaScript/Reference/Global_Objects/eval" rel="nofollow" title="JavaScript/Reference/Global_Objects/eval">eval</a>(str.quote())</code></th>
</tr>
</thead>
<tbody>
<tr>
<td><code>Hello world!</code></td>
<td><code>"Hello world!"</code></td>
<td><code>Hello world!</code></td>
</tr>
<tr>
<td><code>Hello<br/>
            world!</code></td>
<td><code>"Hello\n\tworld!"</code></td>
<td><code>Hello<br/>
            world!</code></td>
</tr>
<tr>
<td><code>" \ — '</code></td>
<td><code>"\" \\ \u2014 '"</code></td>
<td><code>" \ — '</code></td>
</tr>
</tbody>
</table>
<h2 id="Specifications" name="Specifications">规范</h2>
<p>不在任何规范中。实现于 JavaScript 1.3.</p>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<div><div class="blockIndicator warning"><strong><a class="external" href="https://github.com/mdn/browser-compat-data" rel="noopener">We're converting our compatibility data into a machine-readable JSON format</a></strong>.
            This compatibility table still uses the old format,
            because we haven't yet converted the data it contains.
            <strong><a class="new" href="/zh-CN/docs/MDN/Contribute/Structures/Compatibility_tables" rel="nofollow">Find out how you can help!</a></strong></div>
<div class="htab">
<a id="AutoCompatibilityTable" name="AutoCompatibilityTable"></a>
<ul>
<li class="selected"><a>Desktop</a></li>
<li><a>Mobile</a></li>
</ul>
</div></div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td>Basic support</td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
<td><span style="color: #f00;">未实现</span></td>
</tr>
</tbody>
</table>
</div>
<h2 id="See_also" name="See_also">相关链接</h2>
<ul>
<li><code><a href="/zh-CN/docs/JavaScript/Reference/Global_Objects/JSON/stringify" title="JavaScript/Reference/Global_Objects/JSON/stringify">JSON.stringify</a></code></li>
</ul>
</article>